What made Frank Sargeson’s use of New Zealand vernacular important?

Frank Sargeson’s use of New Zealand vernacular was pivotal because it helped break the country's literary reliance on colonial themes, which he and his contemporaries viewed as a barrier to developing a unique national identity.1

By capturing the specific New Zealand patois—a technique he developed after being influenced by Sherwood Anderson’s innovative use of American vernacular—Sargeson sought to articulate a distinct, localized, and provincial sensibility. This shift was essential to the efforts of a vanguard of writers who aimed to redefine New Zealand literature by moving away from the perspectives of the preceding generation and establishing a more authentic, homegrown literary character.1